The author of the paper assumes that cognitive grammar has an educational potential, which is also noticeable in the increasing use of cognitive tools in foreign language teaching. A project of the University of Granada entitled “The educational potential of cognitive grammar” was a stimulus for this research. Therefore, the paper focuses on Spanish as a foreign language and the concept of construal defined by Langacker in his “Cognitive grammar”. The author, using content analysis and dimensions of construal as the methods of research, creates a key of categories of visual representations of grammar in textbooks of Spanish as a foreign language. The categories are inspired by the concept of construal, which is a natural human process. Pictures are used to facilitate the explication of grammar in a more comprehensible way. Moreover, the author shows the potential of creating visual representations of particular grammatical problems and benefits of their usage in teaching other foreign languages.