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