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