One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(6,8)(9,10,14,13)(11,16,12,15)(9,11,14,12)(10,15,13,16)(17,18)(19,23)(20,28)(21,25)(22,27)(24,29)(26,30)(31,32)(1,2,4,5)(3,6,7,8)(9,12,14,11)(10,16,13,15)(17,19)(18,22)(20,26)(21,27)(23,25)(24,30)(28,31)(29,32)(9,10,14,13)(11,15,12,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,31)(28,30)(29,32)(9,10,14,13)(11,15,12,16)(17,18)(19,22)(20,24)(21,25)(23,27)(26,30)(28,29)(31,32)(1,3,4,7)(2,6,5,8)(9,13,14,10)(11,16,12,15)(17,20,21,29)(18,24,25,28)(19,26,27,32)(22,30,23,31)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.