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