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