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