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