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