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