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