Cook elbow macaroni noodles according to your package instructions. Drain and rinse with cold water. Add cooked pasta to a large mixing bowl and drizzle olive oil to prevent pasta from sticking.
Chop yellow and red pepper and celery. Add them to the bowl with macaroni. Set aside.
Mayo based dressing
In a medium size bowl combine mayonnaise, spicy mustard, lemon juice, vinegar, salt, pepper, sugar and whisk well.
Pour dressing over macaroni salad ingredients and toss until combined. Sprinkle with chopped parsley.