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