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