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