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