According to Law 12 of IFAB: "Players can celebrate when a goal is scored, but the celebration must not be excessive; choreographed celebrations are not encouraged and must not cause excessive time-wasting."
Although the directive does not explicitly mention coaches, it seems that they are included within the scope of the guideline. According to Premier League rules, a suspended manager cannot be near the pitch side until two hours after the match. However, he has dressing room access before, at half-time, and after the final whistle. He will also be allowed to have direct communication with the bench which means Carlos Cuesta will continue to receive instructions from the directors' box at Villa Park.