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