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