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)(15,20)(16,26)(17,22)(18,32)(19,23)(21,29)(24,35)(25,33)(27,38)(28,39)(30,36)(31,42)(34,40)(37,43)(41,44)(6,9)(7,11)(13,15,19,18)(14,20,23,32)(16,24,28,29)(17,25,30,31)(21,26,35,39)(22,33,36,42)(27,37,41,40)(34,38,43,44)(13,16,18,29,19,28,15,24)(14,21,20,26,23,35,32,39)(17,27,31,40,30,41,25,37)(22,34,33,38,36,43,42,44)(5,7,8,11)(6,10,9,12)(13,17)(14,22)(15,25)(16,27)(18,31)(19,30)(20,33)(21,34)(23,36)(24,37)(26,38)(28,41)(29,40)(32,42)(35,43)(39,44)(1,3,4,2)(6,9)(10,12)(16,28)(17,30)(21,35)(22,36)(24,29)(25,31)(26,39)(33,42)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.