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