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