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