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