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