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