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