The control does not implement automatic layout of circuit diagrams at this time. If you don't mind displaying them in more flowchart-ish way, you might try applying FlowchartLayout, DecisionLayout or LayeredLayout after creating nodes. The latter lets you select start and end nodes.

OrthogonalLayout should be closest to your example as a drawing convention, however it does not arrange the nodes top-down, but places them in a way that minimizes link bends instead. E.g. the four connected nodes from your example would be placed at the corners of a square to avoid bends instead at side center points.