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