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)(17,18,24,28)(19,20,21,25)(22,26,30,31)(23,27,32,29)(9,11,13,16)(10,14,12,15)(17,19,24,21)(18,25,28,20)(22,29,30,27)(23,26,32,31)(1,3,6,5)(2,7,8,4)(9,10,13,12)(11,14,16,15)(17,20,24,25)(18,19,28,21)(22,23,30,32)(26,29,31,27)(1,4,6,7)(2,3,8,5)(17,21,24,19)(18,20,28,25)(22,27,30,29)(23,31,32,26)(1,3,6,5)(2,4,8,7)(9,10,13,12)(11,14,16,15)(17,22)(18,26)(19,29)(20,23)(21,27)(24,30)(25,32)(28,31)(1,5,6,3)(2,7,8,4)(9,12,13,10)(11,15,16,14)(17,23)(18,27)(19,26)(20,30)(21,31)(22,25)(24,32)(28,29)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.