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