I don't believe there is single word for that. Best you can do is combine two words in a two-word-phrase.
Calligraphy (Wiktionary) (Calligraphy Wikipedia)
Etymology: Borrowed from French calligraphie, from Ancient Greek καλλιγραφία (kalligraphía, literally “pretty writing”), from κάλλος (kállos, “beauty”) + γράφω (gráphō, “to draw”).
(uncountable) The art or practice of writing letters and words in a decorative style; the letters and words so written.
(countable) Any such style of decorative writing.
(countable) A document written in decorative style.
Illustrative (the GNU version of the Collaborative International Dictionary of English)
Tending or designed to illustrate, exemplify, or elucidate.
Making illustrious.
Picturesque (Wiktionary)
Resembling or worthy of a picture or painting; having the qualities of a picture or painting; pleasingly beautiful.
We looked down onto a beautiful, picturesque sunset over the ocean.
Strikingly graphic or vivid; having striking and vivid imagery.
picturesque language
"Illustrative calligraphy" and "picturesque calligraphy" are the best candidate two-word-phrases that I could think of. Or you can use simpler phrases like "picture like calligraphy".