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