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