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