The Sentence Diagram Generator visually represents the sentence "Gracious words are a honeycomb, sweet to the soul and healing to the bones." as follows:

                +---------------------+
                |       are           |
                +---------------------+
                |                     |
          +-----+-----+             +---------------------+
          |   words   |             |       honeycomb     |
          +-----------+             +---------------------+
          |                     |
    +-----+-----+             +---------------------+
    |  Gracious  |             |        sweet        |
    +-----------+             +---------------------+
                             |                     |
                     +-------+-------+     +---------------------+
                     |      to      |     |        healing      |
                     +---------------+     +---------------------+
                     |               |     |                     |
                 +---+---+       +---+---+                 +-----+
                 |  soul |       |  bones |                 |  to |
                 +-------+       +---------+                 +-----+

This diagram illustrates the grammatical structure, highlighting the subject, predicate, and modifiers within the sentence.