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