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