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