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