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