May be possibly, we need the full sentence, or tell us what you are thinking about representing. https://dictionary.cambridge.org/dictionary/english/represent depending on the context "depicts" or another word may be better.

You could say “convey a message” although it would be great if you marked what it is all about and wrote a more complete of the version of what you wanted to say.

It (third person) represents something To represent (infinitive) a thing/person

No. The symbol is in the third person neutral (it). So it represents something.