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