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