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