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