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