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