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