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