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