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)(15,16,19,22,18,20,26,29)(17,23,25,28,24,30,27,21)(3,4,5,6)(8,11)(12,14)(16,20)(21,28)(22,29)(23,30)(4,6)(9,13)(12,14)(15,17)(16,21)(18,24)(19,27)(20,28)(22,30)(23,29)(25,26) involution — undirected(7,9,10,13)(8,12,11,14)(17,24)(21,28)(23,30)(25,27)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.