Network visualization from an edge table

I am new to KNIME and hitting a wall when trying to perform what should be a simple task:

In the process of reconstructing a network from time series data, I obtain an edge table: | source | target | weight |, which I want to visualize. Edges with negative and positive weights should be colored differently.

Looking at various options, it appears that I have to jump through many, many hoops to be able to do this in v. 5.5, without using Python or Java script nodes. Is there a straightforward way to do this using only KNIME/KNIME extension nodes?

Any help or hints for possible simple solutions will be much appreciated! Thanks.

Raina