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