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