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)(31,36)(32,34)(33,40)(35,39)(37,42)(38,43)(41,44)(6,9)(10,12)(14,18)(15,21)(20,25)(22,27)(29,31,34,39)(30,35,32,36)(33,38,42,41)(37,43,40,44)(5,6,8,9)(7,10,11,12)(13,14,17,18)(15,19,21,24)(16,20,23,25)(22,26,27,28)(29,32,34,30)(31,35,39,36)(33,40,42,37)(38,43,41,44)(1,2)(3,4)(5,7,8,11)(6,10,9,12)(13,15,17,21)(14,19,18,24)(16,22,23,27)(20,26,25,28)(29,31)(30,36)(32,35)(33,41)(34,39)(37,43)(38,42)(40,44)(13,16,17,23)(14,20,18,25)(15,22,21,27)(19,26,24,28)(29,33)(30,37)(31,38)(32,40)(34,42)(35,43)(36,44)(39,41)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.