Visually, upper class cybernetics will look it: they'll be sleek and beautiful, with curves and embellishments suited to its wearer. Cybernetics in this situation are analogous to prosthetics or replacements, like limbs or eyes. Augments such as connection to the local WiFi with your brain will not be very visible, such as a small node on the back of the neck.

For lower class people, cybernetics will look slipshod and cobbled together, and augments will be very visible. The middle class will be somewhere between the two, depending on how much they can afford.

In other words, replacements and augmentations exist for all classes, but the more rich someone is, the better they'll look!