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