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