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