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