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