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