One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(4,6)(9,13)(11,14) involution — undirected(3,4)(5,6)(7,8,10,12)(9,11,13,14)(16,20)(21,27)(22,28)(29,30)(3,4)(5,6)(7,9,10,13)(8,11,12,14)(15,16)(17,21)(18,22)(19,20)(23,29)(24,27)(25,30)(26,28)(15,17,19,24)(16,21,20,27)(18,25,26,23)(22,30,28,29)(15,18,19,26)(16,22,20,28)(17,23,24,25)(21,29,27,30)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.