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