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