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