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