A basic description is given in the Maintenance Manual Ch 28-21-00, but why on earth would you want this information if you weren't a refueller or engineer (who should already have access to this information)?
The easiest way to fuel a 744 is to do it automatically. i.e. Make sure that all the manual refuel valve switches are in the CLOSED position, then dial in the required fuel load (total) using the thumbwheels, then push the Preselect Switch upwards for a second or two (ensuring the required total fuel value is transferred to the Preselect Window (digital display), then select the ALL VALVES control switch to "OPEN". Then wait for the aircraft to do its job (but monitor the tank quantity displays for excessive imbalances).
Sorry, all the diagrams I have are copyrighted.