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