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