I know this question is quite old but still it is valid since there has been no realistic solution for this issue.
I developed Link Map Viewer (Windows app) which can visualize internal link of your site. I took totally different approach to visualize internal link structure.
Please watch this demo video https://www.youtube.com/watch?v=epgXDgpm9Rg for quick review.
Or visit my site https://kappa-project.co.jp/seo/en/.
