In Visual Studio there is a way to output the compilation result in the form of both source code, assembler code and the machine code by setting the compiler output properties:

The generated file has the .cod extension which is by default associated with Visual Studio. However, on opening the file it is just opened as a plain text file, no syntax highlighting etc. is available here:

Is there any tool that would allow me to visualize these files, at least to be able to separate the comments containing the source code, addresses and the assembly code optically?
EDIT: I tried NotePad++, my preferred editor, as the very firs solution and it is already quite good how I can visualize it there using Assembler as a language, but still there are problems with hexadecimal numbers, the assembly code is not aligned properly etc…

Try Notepad ++.
and don;t forget to select the Language by clicking Language->A->Assembly
You will get the necessary syntax highlighting