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