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