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