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