Is there any software available to visualize the DCCM onto the 3D protein structure?
https://www.mpibpc.mpg.de/grubmueller/g_correlation or cpptraj from Amber Tools.
It depends on what is the purpose of the visualization.
If you just want to highlight the cross-correlation between strongly correlated residues on the structure, you can add a bond between each pair using Pymol to show the linkage. The bond width can be proportional to the value of the correlation. However, if you want to visualize all pairs, you will probably get a "furball" and see nothing.
If you want to see some global features of the correlation, you can color each residue by its "centrality" (degree, eigen) value, representing how important a residue is in the cross-correlation network defined by your DCCM.
Another way is to derive "dynamic communities" from cross-correlation. This tells you how many "domains" move collectively according to the protein dynamic. You can visualize communities with a different color.
The best tool for this task is a python package called correlationplus.
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