Bring a large pot of lightly salted water to a boil. Cook pasta according to instructions on the box. Drain and run cooked pasta under cold water to cool.
In a medium bowl, whisk together peanut butter, soy sauce, rice vinegar, sesame oil, Sriracha, water, minced ginger, minced garlic, and brown sugar.
Combine pasta with sliced vegetables. Pour the dressing over the pasta and vegetables and mix well. Cover and chill for at least one hour before serving. Garnish with chopped cilantro and peanuts. Enjoy!