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