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