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