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