how to change button background colour in tableview cell swift3

I have one UITableViewCell. In TableViewCell, I have 7 buttons in single row. I want to play music. When i press button1, its background colour should be changed. If I pressed button2, its background colour should be changed, and button1 would be deselect. I also set the tag for each button in row, but i don't understand, how to do? Sound is playing fine but i am unable to select and deselect buttons. I am using swift3. Thanks in advance.

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> tableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "PlayerCell") as! tableViewCell

     cell.Btn_one.addTarget(self, action: #selector(TableViewController.BtnAction_One), for: .touchUpInside)

     //For example
       if (cell.Btn_one.tag == 1){

        cell.Btn_one.backgroundColor = .white
    }else if (cell.Btn_two.tag == 2){
               cell.Btn_two.backgroundColor = .red
    }
 }


 @IBAction func BtnAction_One(_ sender: UIButton) {
    self.play()
 }