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