The newest version (6.7) shows U+2028 LINE SEPARATOR as an upper dot (like the middle dot “·” but in a higher position). It does not show U+2029 PARAGRAPH SEPARATOR at all, as stated in the question. Since “Show Symbol” is the way to control things like this, we can be pretty sure that there isn’t a way to make PARAGRAPH SEPARATOR visible.
By the way, the situation is similar in the BabelPad editor, but in it, you can use the Convert Toolbar to convert characters to their U+.... notations like U+2029.