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