After executing ARCHIMED-φ in the example folder, the simulation outputs are found at this path: ./output/simdir. There are several files here, and one is especially useful for visualizing the results in 3D: coffee.opf.
To render the results, please download XPlo from the AMAPStudio website. Then open XPlo, press ctrl+I, choose opf, and navigate to the location of coffee-1-step00002.opf and open it.
Xplo will open and 3D render the example coffee. Now you can color the coffee components by any output variable by clicking on: Geometry -> Colorizer.