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