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