You can view pics of all sorts of knobs (including 'auto') to your heart's content
here.
As far as I'm aware, there is no difference between the shifter on a sport A5 and a regular A5. Attached is a pic (cropped) of a shifter from a sport A5 that I saw at a London dealership not too long ago. You'll find that it looks the same as all the other A5 shifters.