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)(11,15)(12,13)(14,16)(17,18)(19,23)(20,24)(21,25)(22,26)(27,30)(28,31)(29,32)(1,3,6,5)(2,7,4,8)(10,13)(14,15)(17,18,22,26)(19,23,24,20)(21,25,29,32)(27,30,31,28)(1,3,6,5)(2,8,4,7)(9,10)(11,14)(12,13)(15,16)(19,24)(20,23)(21,29)(25,32)(9,11)(10,14)(12,16)(13,15)(17,19)(18,23)(20,26)(21,27)(22,24)(25,30)(28,32)(29,31) involution — undirected(1,4,6,2)(3,7,5,8)(17,20,22,23)(18,24,26,19)(21,28,29,30)(25,31,32,27)(1,5,6,3)(2,7,4,8)(17,21)(18,25)(19,27)(20,28)(22,29)(23,30)(24,31)(26,32)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.