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