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