How to control graph layout

I want to know if there is a way to change the layout of the graph to represent what I want.

for now I connection of the nodes are correct but the node placment are not.

I wish to get some thing like this : (where the nodes are ordered from left to right and top to bottom)

what I get is the following:

Answer 1

[Steven Lord]

I don't believe any of the methods available in the layout function for graph and digraph objects will give you that exact configuration. When you plot the graph or digraph object, you can explicitly specify the X, Y, and (if desired) Z coordinates of the nodes. See the "Custom Graph Node Coordinates" example on the plot documentation page I linked above or this post on Loren's blog which uses the centroid of each US state as the coordinate of its node in the plot of the US.