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