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