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