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