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