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