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)(15,24)(16,21)(17,22)(18,32)(19,23)(20,26)(25,38)(27,34)(28,36)(29,37)(30,42)(31,35)(33,40)(39,44)(41,43)(2,4)(13,15,18,26,19,27,17,31)(14,20,22,24,23,35,32,34)(16,25,30,40,28,39,29,41)(21,33,37,38,36,43,42,44)(6,9)(10,12)(13,16,19,28)(14,21,23,36)(15,25,27,39)(17,29,18,30)(20,33,35,43)(22,37,32,42)(24,38,34,44)(26,40,31,41)(5,7,8,11)(6,10,9,12)(16,28)(21,36)(25,39)(29,30)(33,43)(37,42)(38,44)(40,41)(13,17,19,18)(14,22,23,32)(15,26,27,31)(16,29,28,30)(20,34,35,24)(21,37,36,42)(25,40,39,41)(33,44,43,38)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.