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