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