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