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