You can run d3 on the backend with node. It shouldn't be too difficult using it with a layout to constrain the potential visualization to a more comprehensible data set.

There's even a d3-node package available to generate a static SVG or png.

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Additionally, grouping or binning the data may be something to consider when dealing with a visualization with 100+ nodes. Never tried that with DAG datasets, not sure how that would work, but it's interesting to think about.