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