I don't have a picture of it, but here is the concept . . .
Connect the - ends on both batteries together for a common ground. All grounds connect.
Then connect the + of the 4.8V battery ONLY to where the servos plug in, middle row of the headers.
And lastly connect the + of the 9V battery ONLY to the voltage regulator input. The voltage regulator output goes the the microcontroller and sensors only.
Make sure the + of the 9V and the 4.8V do not connect.
I know this isnt a detailed wire by wire step by step instruction, but its the idea so if you think about it for a bit it should come to you.
(if still not, let us know)