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