Combine first 9 ingredients in a small bowl, stirring well with a whisk. Gradually add oil to the vinegar mixture, stirring constantly.
Bring 3 cups water to a boil in a medium saucepan. Add rice to pan. Cook, covered, 45 minutes or until tender. Drain. Place rice in a large bowl. Add 1/4 cup vinegar mixture; toss well. Cool.
Cook green beans and lima beans in boiling water 4 minutes or until tender. Drain. Rinse with cold water; drain. Add beans, remaining vinegar mixture, bell pepper, celery, onion, and tomato to rice mixture; toss well. Line each of 6 plates with 1 lettuce leaf; top each serving with about 1 1/2 cups salad mixture. Sprinkle each serving with 1 1/2 teaspoons almonds.