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