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