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