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