In a medium bowl, whisk together the mayonnaise, vinegar, sugar, mustard powder, garlic powder, onion powder, and pepper as well as the paprika, if using. Chill in the refrigerator while you cook the pasta and prep the veggies.
2 cups mayonnaise, ¼ cup red wine vinegar, ¼ cup granulated sugar, 1 teaspoon ground mustard, 1½ teaspoons garlic powder, ½ teaspoon onion powder, ¼ teaspoon ground black pepper, ¼ teaspoon smoked paprika