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