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