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