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