  Various tensor models have been recently shown to have the same properties as
the celebrated Sachdev-Ye-Kitaev (SYK) model. In this paper we study in detail
the diagrammatics of two such SYK-like tensor models: the multi-orientable (MO)
model which has an $U(N) \times O(N) \times U(N)$ symmetry and a quartic
$O(N)^3$-invariant model whose interaction has the tetrahedral pattern. We show
that the Feynman graphs of the MO model can be seen as the Feynman graphs of
the $O(N)^3$-invariant model which have an orientable jacket. We then present a
diagrammatic toolbox to analyze the $O(N)^3$-invariant graphs. This toolbox
allows for a simple strategy to identify all the graphs of a given order in the
$1/N$ expansion. We apply it to the next-to-next-to-leading and
next-to-next-to-next-to-leading orders which are the graphs of degree $1$ and
$3/2$ respectively.
