1) For the sauce: Place all of the ingredients in the bowl of a food processor and process until combined. Store covered in the refrigerator for up to a month. The sauce will thicken as it sits in the refrigerator; it's OK to thin it with some lime juice or water before using.
2) For the salad: Toss the cooled pasta with the vegetables and sesame oil; stir in the peanut sauce and chill before serving. Garnish with fresh chopped peanuts.