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