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