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