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