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