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