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