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