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