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