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