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