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