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