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