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