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)(15,19)(16,21)(17,20)(18,22)(23,33)(24,32)(25,34)(26,31)(27,37)(28,35)(29,38)(30,36)(39,43)(40,42)(41,44) involution — undirected(6,9)(7,11)(13,15,17,25)(14,19,20,34)(16,27,28,24)(18,23,30,26)(21,37,35,32)(22,33,36,31)(29,40,41,39)(38,42,44,43)(1,2,3,4)(14,20)(15,23)(16,28)(18,30)(19,31)(24,40)(25,26)(27,39)(32,43)(33,34)(37,42)(38,44)(6,9)(10,12)(13,16,17,28)(14,21,20,35)(15,24,25,27)(18,29,30,41)(19,32,34,37)(22,38,36,44)(23,39,26,40)(31,42,33,43)(5,7,8,11)(6,10,9,12)(15,23)(18,30)(19,33)(22,36)(24,39)(25,26)(27,40)(29,41)(31,34)(32,43)(37,42)(38,44)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.