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