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