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