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