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