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