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