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