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)(11,12,17,21)(13,18,24,35)(14,25,29,41)(15,20,16,31)(19,27,37,28)(22,38,26,40)(23,33,30,34)(32,42,36,39)(3,5)(4,7)(6,10)(8,9)(11,13)(12,18)(14,26)(15,30)(16,23)(17,24)(19,36)(20,34)(21,35)(22,29)(25,40)(27,39)(28,42)(31,33)(32,37)(38,41) involution — undirected(11,14,16,28,17,29,15,27)(12,19,20,25,21,37,31,41)(13,22,23,39,24,26,30,42)(18,32,34,38,35,36,33,40)(5,10)(7,9)(11,13)(12,18)(14,22)(15,30)(16,23)(17,24)(19,32)(20,34)(21,35)(25,38)(26,29)(27,42)(28,39)(31,33)(36,37)(40,41) involution — undirected(4,8)(7,9)(11,15,17,16)(12,20,21,31)(13,23,24,30)(14,27,29,28)(18,33,35,34)(19,25,37,41)(22,39,26,42)(32,40,36,38)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.