Since it's based on the Iron Man and Batman suits, he also looks just like a man wearing an armor suit, and not like a man integrated into robot.
To be fair, the original Robocop doesn't look like a cyborg either, unless you take the helmet off.
That said, this is just one of many iterations of the suit, assuming that the leaks are true. We might get something that looks a lot closer to the original in terms of color by the end of the film.
Well I thought that was how he actually looks like in the film when he takes the helmet off.