PREHEAT grill to medium-high heat. Grease grate of grill. Fold up sides of a 12-inch-long sheet of aluminum foil to resemble a "pan." Place on grate of grill. Add coconut. Grill 10 min. or until golden brown, stirring occasionally.
MEANWHILE, place fruit on grill grate. Grill 3 min. on each side or until lightly browned on both sides. Cool fruit. Remove and discard skin from nectarines, peaches and mangos. Cut fruit into 1/2-inch pieces.
TOSS fruit with the toasted coconut and dressing just before serving.
