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