  We provide a convenient formulation of the definition of Cartan graphs and
Weyl groupoids introduced by Heckenberger and Schneider, and construct Cartan
graphs for regular symmetrizable contragredient Lie superalgebras. For
$\mathfrak{sl}(m|n)$, $\mathfrak{osp}(2m+1|2n)$ and $\mathfrak{osp}(2m|2n)$ we
explicitly describe the Cartan graph in terms of partitions and determine the
relations between the generators of their Weyl groupoids.
