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