Grate the squash using the larges holes of a box grater. Combine the squash, dried cranberries, salt and black pepper in a bowl. Add vinaigrette to taste. Toss, taste, and adjust the seasoning. Sprinkle with chopped cilantro; serve immediately, or cover and refrigerate for up to several hours.
To make the vinaigrette: Blend all ingredients in a blender or food processor. Add a small amount of additional water to thin, if necessary--but it probably won't be.