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