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