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