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