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