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