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