One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(5,9)(7,10)(14,21)(18,23)(20,25)(24,26)(27,28,32,33)(29,34,35,30)(31,39,40,36)(37,38,42,41)(3,4,6,8)(5,7,9,10)(12,16)(13,19)(18,23)(20,25)(28,33)(30,34)(36,39)(38,41)(3,5,6,9)(4,7,8,10)(11,12,15,16)(13,17,19,22)(14,18,21,23)(20,24,25,26)(27,29,32,35)(28,34,33,30)(31,37,40,42)(36,41,39,38)(11,13)(12,17)(14,20)(15,19)(16,22)(18,24)(21,25)(23,26)(27,30,32,34)(28,35,33,29)(31,38,40,41)(36,42,39,37)(11,14,15,21)(12,18,16,23)(13,20,19,25)(17,24,22,26)(27,31,32,40)(28,36,33,39)(29,37,35,42)(30,38,34,41)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.