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