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)(17,18,23,27)(19,20,28,24)(21,29,31,25)(22,26,30,32)(3,4)(6,8)(11,15)(13,16)(17,19)(18,24)(20,27)(21,26)(22,29)(23,28)(25,30)(31,32) involution — undirected(1,3,5,4)(2,6,7,8)(9,10)(11,13)(12,14)(15,16)(17,20,23,24)(18,19,27,28)(21,30,31,22)(25,32,29,26)(3,4)(6,8)(17,21,23,31)(18,25,27,29)(19,26,28,32)(20,22,24,30)(1,4,5,3)(2,6,7,8)(9,11,12,15)(10,13,14,16)(17,22)(18,26)(19,25)(20,21)(23,30)(24,31)(27,32)(28,29)(1,2)(3,6)(4,8)(5,7)(9,10)(11,13)(12,14)(15,16)(17,19)(18,24)(20,27)(21,26)(22,29)(23,28)(25,30)(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.