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