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