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