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