Start by making the dressing by whisking all of the ingredients in a bowl or salad dressing shaker. Set aside. Cook Soba noodles as per packaging instructions. Divide the soba noodles among to serving dishes and top with the sliced cucumber, cherry tomatoes, segmented orange slices, and cilantro. Whisk or shake the dressing and pour it over the soba noodle salad. Toss well before eating.