In Xcode IDE when I add a new group named 'Organizer' inside the default Classes group it is getting created. But when I physically see the folder in the Finder, that new group Organizer is not showing as a folder.
Actually I want to maintain the sources in a particular structure i.e, how it exists in the XCode view.
What should I do to achieve this?
You should create all necessary folders within Finder and then add them to project (right mouse click -> Add files to XYZ project). While adding files, options should look like this:
UPD: Xcode 9 finally supports automatic folder creation and file reordering for groups operations!