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