One vertex per element, one color per generator, with an edge from x to x·s.
(9,10,14,15)(11,16,12,13)(17,18,23,21)(19,26,22,24)(20,28,30,25)(27,31,29,32)(1,2)(3,7)(4,5)(6,8)(10,15)(11,12)(17,19,23,22)(18,24,21,26)(20,27,30,29)(25,31,28,32)(2,5)(6,7)(10,15)(13,16)(17,18,23,21)(19,24,22,26)(20,25,30,28)(27,31,29,32)(9,11,14,12)(10,13,15,16)(17,20)(18,25)(19,27)(21,28)(22,29)(23,30)(24,31)(26,32)(1,3,4,8)(2,6,5,7)(9,12,14,11)(10,16,15,13)(17,21,23,18)(19,24,22,26)(20,28,30,25)(27,31,29,32)(1,2)(3,6)(4,5)(7,8)(9,13,14,16)(10,11,15,12)(17,22,23,19)(18,24,21,26)(20,29,30,27)(25,31,28,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.