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