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