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