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)(15,21)(16,24)(17,18)(19,22)(20,25)(23,27)(26,28)(29,30)(31,36)(32,39)(33,35)(34,41)(37,42)(38,44)(40,43)(7,11)(9,12)(14,17)(15,22)(16,25)(27,28)(29,31,35,32)(30,36,33,39)(34,38,42,40)(37,43,41,44)(5,7)(6,9)(8,11)(10,12)(13,15)(14,19)(16,26)(17,21)(18,22)(20,28)(23,25)(24,27)(29,32,35,31)(30,36,33,39)(34,40,42,38)(37,43,41,44)(1,2,3,4)(5,6)(7,9)(8,10)(11,12)(13,16)(14,20)(15,23)(17,24)(18,25)(19,27)(21,28)(22,26)(29,33,35,30)(31,36,32,39)(34,41,42,37)(38,43,40,44)(13,17,18,14)(15,21,22,19)(16,24,25,20)(23,28,26,27)(29,34)(30,37)(31,38)(32,40)(33,41)(35,42)(36,43)(39,44)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.