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