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