Graph theory exporting problems

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Save it as a png file instead of a PDF file. What should work is

g.plot(graph_border = True).save('graph.png')

Then your LaTeX file should look like

\documentclass{article}
\usepackage{graphicx}
\begin{document}

Hello.

\includegraphics{graph.png}

Goodbye.

\end{document}

For this particular graph, I get a nicer picture doing g.plot(graph_border = True) than doing g.plot(graph_border = True).save('graph.png'), so I would actually do the first command to view the picture, and then save that picture manually into graph.png.