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