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