Shouldn't be one...everything is hooked up to the controller. Why are you looking for the relay?
I ask because a few months ago, I had a code for fuel pump relay. I didn't know where it was so I could replace it. I went to the dealership...and they gave me 8 different printouts of the fuse and relay diagrams for every production period before my production date to after. I went home and compared all 8 to my actual layout. They were all not even close to being similar with the one where my production date fell into wasn't even the closest match.
Anyway, I then found out that mine doesn't have a fuel pump relay...it is all in the controller over the fuel tank under the rear seat. I didn't replace the controller...I just cleared the code and never saw it again.
If you need a diagram...go ask your closest dealer for a print. Give them your production date that should be printed in the driver door opening and hopefully you'll have better luck.