The recipe can be found in Vegan Deli by Jo Stepaniak. It's easy to make and I always have the dressing ingredients on hand. Any dressing left in the bottom of the bowl will be absorbed by the noodles as the salad chills. The vegetables used are green onions, broccoli, and carrots. The broccoli and carrots are added during the last few minutes of cooking the pasta. That way the broccoli and carrots are a bit softer but still have plenty of bite. No need to dirty up another pan to cook them.
This is the only cold noodle salad I've ever eaten and liked.