[wulf]

It looks like a rather overcast day. You might find that the richer colours you desire come from shooting in situations with richer lighting - for example, the light an hour or so after dawn or before sunset on a clear day.

The white balance setting will also have an effect. What setting did you use here?

Thirdly, don't forget that a lot of the photos you see displayed will have been carefully developed. Film photographers will spend hours sloshing chemicals about in the dark room; many digital photographers will use image processing software to emphasise the qualities in the image that bring out the character they saw in the scene.

Wulf

ps. moved... this is a more general technique question, not one specifically of composition.