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