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