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