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