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