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