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