I'm not looking for pieces in which math related object appears with allegoric meanings, but works which aim to to have mathematical objects as principal subjects.
Specifically, I was wondering if anyone knows nice rapresentations (in the non-mathematics sense) of finite small group, with an aesthetic intent beside a faithfulness one.
On
If you're interested in higher group theory, check out Anatoly Fomenko:
Simplicial spaces, cellular spaces, crystal and liquid
Homotopy groups of spheres;
Discrete groups generated by reflections
Spectral sequences and orbits of the action of groups;
A 2-adic solenoid
The drawings of M.C.Escher immediately come to mind.
See this nice paper on the subject.
EDIT
Also check these very interesting and illuminating articles posted below (comment section) by user Quasicoherent-
"Artful Mathematics: The Heritage of M. C. Escher Celebrating Mathematics Awareness Month"