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