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