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