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