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