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