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