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