Maple is only producing a description of a graph, e.g.
C := Graph 9: an undirected unweighted graph with 66 vertices and 219 edge(s)
,
rather than displaying the graph. Can anyone please help?
Thanks.
You need to use the command DrawGraph in the GraphTheory package. So, if GraphTheory is already loaded (with with(GraphTheory)), then issue the command DrawGraph(C). If it isn't loaded, then use GraphTheory:-DrawGraph(C).
There are many options for different ways to draw the graph, which you can read about on the help page ?DrawGraph.