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