The same is true in the sense that they're actively helpful in 'hiding away' a large amount of complexity in relatively innocent-looking expressions, though Feynman diagrams are less of a tool of hiding information and more of a computational aide (e.g. it gives rise to a set of operations and a nice way of organizing them).

You could see this as an actively distinct concept (Feynman diagrams are graphs which give rise to some algebraic structure, whereas Dirac's notation is an algebra in itself) or you can see them both as just a means of abstracting away many operations (e.g. in Dirac's notation, this would be multiplication by operators and inner products, both of which are integrals in some sense, as just a non-commutative type of multiplication) in really powerful notation.