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