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)(18,24)(19,23)(20,25)(22,26)(27,30)(28,29)(3,5,6,4)(8,11)(12,14)(15,17)(16,21)(18,28)(19,26)(20,27)(22,23)(24,29)(25,30)(7,9,10,13)(8,12,11,14)(15,17)(16,22)(18,26)(19,28)(20,27)(21,23)(24,30)(25,29)(15,18,20,19)(16,23,25,24)(17,26,27,28)(21,29,30,22)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.