Visualizing behavioral states of teams is useful when providing effective reflection on teamwork for team members, monitoring and intervening teams, and analyzing team processes for teamwork researchers. This paper aims to develop a method to visualize behavioral states in meeting settings. We assumed that team processes follow several periods where behavioral states are stable and tried to detect these periods by focusing on change of communication patterns and facial expression. Detailed methods of detection and subsequent visualization are provided. We then test our method by comparing visualized team states in an idea generation workshop with qualitative observation of its team process. The result shows our method can effectively express some team states and provides viewpoints for more rigid quantitative verification.