One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,6)(7,10)(8,9)(11,12)(13,14,16,19)(15,24,25,42)(17,20,28,34)(18,32,29,23)(21,37,35,26)(22,39,36,30)(27,43,33,40)(31,41,44,38)(6,9)(10,12)(14,19)(20,34)(21,35)(22,36)(23,32)(24,42)(38,41)(40,43) involution — undirected(2,4)(5,7,8,11)(6,10,9,12)(14,20)(17,30)(18,29)(19,34)(21,24)(22,23)(26,31)(27,33)(28,39)(32,36)(35,42)(37,44)(38,43)(40,41)(13,15,16,25)(14,21,19,35)(17,31,28,44)(18,33,29,27)(20,24,34,42)(22,40,36,43)(23,41,32,38)(26,39,37,30)A 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.