If you are referring to the correspondence between the graph and the matrix: click on the dots you see in the connectivity matrix, and the names of the ROIs will be displayed at the bottom of the figure.
If you are asking about the configuration of your colormap: this depends mostly on what your objectives are, there is no truth here, this is only data visualization options. For example, if you want to see which condition (FilesA or FilesB) has higher connectivity, you should not check the option "Absolute values" because the sign gives you this information.