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