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