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