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