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