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