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