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