Cook sweet potato and green beans (separately, since the potato takes longer). You can either steam them, blanch in a little water, or use a pressure cooker as I did.
In a medium bowl combine mayo, mustard, maple syrup, tamari, salt and pepper, and water to thin.
Place cooked sweet potato and green beans in with the sauce and stir until veggies are evenly coated. Top with basil and paprika if desired. Serve cold or warm.