Such a quantized vibration has all the properties of a particle: it has a certain mass, it has a certain momentum, it has a certain angular momentum, and when you look at it in another frame of reference, all these quantities transform just as would a particle’s. And, when you “perform a position measurement” it shows up as a single dot. If you don’t do a position measurement it spends most of its time quantum superposition of states of definite position; hence the “cloud” aspect.
Similarly, a non vanishing Electric Dipole Moment would be some preferred direction to its electric interactions in relation to its spin. Its electric field would be slightly oblong even when position is localized to a dot.
So to clarify, there are multiple senses of “electron cloud” at play — the superpositions of positions is what is usually meant by the term, as in electron cloud around nucleus of atom. The article’s use of the term is a tad sloppy since it invites confusion with this — it means something that generates an oblong electric field and reacts to an external electric field through a term in the energy of the form p.E (with p the EDM and E the external electric field).