The          chicken       made       me       sick      after      I       ate       it.
       |              |             |         |         |          |       |        |       |
      Det           N           V         Pron     Adj      Prep     Pron    V       Pron


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                   /____________________________________________________\


     (The) (chicken) (made) (me) (sick) (after) (I) (ate) (it)


     The diagram shows the grammatical relationships between the words in the sentence.  "The chicken" is the subject, "made" is the verb, "me" is the indirect object, "sick" is the object complement, and "after I ate it" is an adverbial clause modifying the verb "made".  The adverbial clause itself has "I" as the subject, "ate" as the verb, and "it" as the object.  The diagram visually represents the hierarchical structure of the sentence, showing how phrases and clauses are embedded within the main clause.  The use of lines and labels clarifies the grammatical function of each word and its relationship to other words in the sentence.  The diagram could be further enhanced with labels indicating parts of speech (e.g., Det for Determiner, N for Noun, V for Verb, Pron for Pronoun, Adj for Adjective, Prep for Preposition) for a more comprehensive grammatical analysis.  The diagram's structure clearly illustrates the sentence's complex grammatical composition.