(I hadn't realized there was another thread.)
First, if your film was scanned, then you have a digital image and you can bump the colors in post-processing the way you would with a picture you took with a digital camera.
Second, work on exposure. Does your camera have a light meter? Were you on auto exposure? Some color films can really wash out when over-exposed (unless it's Ektar, which oddly seems more saturated when over-exposed). The light in your picture seems pretty flat and overcast days can be kind of tricky to meter. There's often more glare than you realize so sometimes the shots get overexposed. Your picture has a lot of darker colors but the sky is all blown out. After looking at it again, it seems a stop or two overexposed.
What kind of film were you using? Some films are better for color saturation. Everyone is going to have a different opinion at this point. I just shot several rolls of Kodak Portra and love the colors. I was never really too impressed with the Fuji Superia, but others love it. It can be quite good but it seems to have less latitude than the Portra, which means you have to really be on your game with exposures.