If you have a really bright background and your subject is in the foreground there is no 'setting' in the camera to resolve this. You could take several shots (of different exposures, one -1 under, +1 over and one normal) and blend them afterwards (bracketing), but if you have people or anything moving in the shot this is not ideal as they are likely to move between shots. Plus you really need a tripod to get the shot identical. As D.P. has already said using an ND Grad filter on the front of the lens will allow the camera to correctly meter against the bright sky (crudely speaking, it darkens the the top and lightens the bottom). This means you can take the one shot and it be exposed more ideally. This method is still not perfect but is the closest you can get to a correct exposure when the sky is very bright. Ideally shoot with the sun behind you too as this will mean your colours will naturally be a touch more pleasing.
As already said, shooting in RAW means a certain amount of in camera processing does not happen. Saturation being one of them. some people alter the white balance in camera, personally, I do it aftewards. This varies between camera models/brands to a certain extent and process a RAW file is standard workflow for anyone. If using Adobe Bridge, three sliders will make the most impact 'Blacks', 'Saturation', 'White Balance'. A slight adjustment of these three will give you what you are looking for. Don't shoot in jpeg as a shortcut as its just pap.
Composition comes with practice, just stick with it. Personally, I think your first two shots are nicely exposed.