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