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