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