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