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