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)(21,32)(26,35)(28,37)(29,36)(31,38)(33,40)(34,39)(41,43)(42,44)(5,6)(7,10)(8,9)(11,12)(13,15,18,27,19,29,17,28)(14,20,22,25,24,37,23,36)(16,31,33,43,34,26,32,42)(21,38,39,44,40,35,30,41)(2,4)(6,9)(10,12)(13,16,18,33,19,34,17,32)(14,21,22,39,24,40,23,30)(15,26,27,42,29,31,28,43)(20,35,25,41,37,38,36,44)(5,7)(6,10)(8,11)(9,12)(13,17,19,18)(14,22,24,23)(15,27,29,28)(16,32,34,33)(20,36,37,25)(21,39,40,30)(26,42,31,43)(35,44,38,41)(7,11)(10,12)(13,17,19,18)(14,22,24,23)(15,28,29,27)(16,32,34,33)(20,25,37,36)(21,39,40,30)(26,43,31,42)(35,41,38,44)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.