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