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