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