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)(19,24)(20,23)(21,25)(22,26)(27,31)(28,29)(30,32) involution — undirected(9,10,12,13)(11,14,15,16)(17,19)(18,22)(20,27)(21,26)(23,30)(24,25)(28,31)(29,32)(2,5)(6,7)(19,26)(22,24)(27,32)(30,31) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,11,12,15)(10,14,13,16)(17,20,21,29)(18,23,25,28)(19,27,26,32)(22,30,24,31)(1,3)(2,6)(4,8)(5,7)(17,18)(19,24)(20,28)(21,25)(22,26)(23,29)(27,30)(31,32) involution — undirected(17,19)(18,24)(20,27)(21,26)(22,25)(23,31)(28,30)(29,32) 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.