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