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