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