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