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