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