See the module pypsa.plot.
PyPSA has several functions available for plotting networks with different colors/widths/labels on buses and branches.
Interactive plots of networks can be created that use the d3js-based library plotly (this uses JavaScript and SVGs). This is meant for use with Jupyter notebooks.
Call network.iplot(); see the doc string for more instructions and
the SciGRID plotly example.
Static plots of networks can be created that use the library matplotlib. This is meant for use with Jupyter notebooks, but can also be used to generate image files.
Call network.plot(); see the doc string for more instructions and
the SciGRID matplotlib example.