I make it with guidance of xaraxone.com tutorials (for Xara vector tool). Sure Inkscape & Xara have many differencies (for example available gradients in Xara are more various, bevels are cool). But all that could be done in different way in Inkscape.
The standard, unscrambled (solved) Rubik's Cube, on 3-sides, as an SVG image. You have a choice of the red/white/blue or yellow/green/cyan images, or both together.