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