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)(9,11)(10,12)(13,14)(15,16,20,22)(17,23,26,24)(18,19,27,28)(21,29,30,25)(7,9,10,13)(8,11,12,14)(15,17,19,25,20,26,28,29)(16,21,18,23,22,30,27,24)(8,12)(11,14)(16,22)(18,27)(21,30)(23,24) involution — undirected(4,6)(15,18,19,22,20,27,28,16)(17,24,25,21,26,23,29,30)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.