Remove ends from beans.
If beans are large, cut French style into lengthwise strips.
Heat beans and 1 inch salted water ( 1/2 teaspoon salt to 1 cup water) to boiling.
Cook uncovered 5 minutes.
Cover and cook until tender, whole 10 to 15 minutes, French style 5 to 10 minutes; drain.
Prepare Vinaigrette Dressing.
Pour over warm beans and toss.
Cover and refrigerate at least 2 hours.
Remove beans to lettuce-lined plate with slotted spoon.
Add tomatoes and onion.
Sprinkle with cheese; garnish with olives.