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