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