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