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)(11,12)(13,14)(15,16)(18,23)(19,27)(20,26)(29,30)(1,3,4,8)(2,5,6,7)(10,14)(11,15)(17,18,22,23)(19,24,27,25)(20,21,26,31)(28,29,32,30)(1,3)(2,5)(4,8)(6,7)(9,11,13,15)(10,12,14,16)(17,19)(18,24)(20,28)(21,29)(22,27)(23,25)(26,32)(30,31)(1,3)(2,5)(4,8)(6,7)(9,12)(10,15)(11,14)(13,16)(17,19)(18,25)(20,28)(21,30)(22,27)(23,24)(26,32)(29,31) involution — undirected(1,2)(3,5)(4,6)(7,8)(17,20)(18,21)(19,28)(22,26)(23,31)(24,29)(25,30)(27,32) involution — undirected(17,21)(18,26)(19,29)(20,23)(22,31)(24,32)(25,28)(27,30) 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.