Once pasta has cooked, rinse it with cool water and allow it to drain completely.
In a large bowl, stir together the mayo, mustard, and vinegar, until well-combined. Gently fold in the pasta, hard-boiled eggs, and relish. Taste for seasoning and add salt and pepper as needed.
Chill pasta until ready for service (at least 2 hours). Before serving macaroni salad, sprinkle the top with paprika.