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