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