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)(15,19)(16,23)(17,18)(20,25)(21,28)(22,26)(24,27)(30,34)(32,40)(35,37)(38,41)(6,10)(7,12)(14,18)(19,26)(20,23)(27,28)(29,30,33,34)(31,37,39,35)(32,36,40,42)(38,44,41,43)(5,6,9,10)(7,11,12,8)(13,14)(15,19)(16,20)(17,18)(21,27)(22,26)(23,25)(24,28)(29,30)(31,35)(32,36)(33,34)(37,39)(38,43)(40,42)(41,44)(1,2)(3,4)(5,7)(6,11)(8,10)(9,12)(13,15,17,22)(14,19,18,26)(16,24,25,21)(20,28,23,27)(29,31,33,39)(30,35,34,37)(32,41,40,38)(36,44,42,43)(5,8,9,11)(6,7,10,12)(13,16)(14,20)(15,21)(17,25)(18,23)(19,27)(22,24)(26,28)(29,32,33,40)(30,36,34,42)(31,38,39,41)(35,43,37,44)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.