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