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