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