A force-directed network diagram visualizes seven named nodes connected by weighted links, with groups indicated by node clusters. The nodes are rendered as white circles with red outlines and violet-labeled text on a light yellow background. Using d3.layout.force from D3 v4, the simulation applies gravity, charge, and distance constraints, while link thickness reflects the `weight` value from the loaded graphFile.json. Nodes are draggable, and the tick event updates line and transform attributes as positions change.