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