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