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