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