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