COOK potatoes in boiling water in large saucepan 10 to 15 min. or just until tender; drain. Cool.
MEANWHILE, chop 2 eggs; slice remaining egg. Combine MIRACLE WHIP, celery, onions, chopped eggs, relish, mustard and sugar in large bowl.
ADD potatoes to MIRACLE WHIP mixture; mix lightly. Top with egg slices. Sprinkle with paprika.