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