  In this work, given $(R,\frak m)$ a finite commutative local ring with
identity and $k \in \mathbb{N}$ with $(k,|R|)=1$, we study the number of
cliques of any size in the Cayley graph $G_R(k)=Cay(R,U_R(k))$ %and
$W_R(k)=Cay(R,S_R(k))$ with $U_R(k)=\{x^k : x\in R^*\}$. Using the known fact
that the graph $G_R(k)$ can be obtained by blowing-up the vertices of
$G_{\mathbb{F}_{q}}(k)$ a number $|\frak{m}|$ of times, with independence sets
the cosets of $\frak{m}$, where $q$ is the size of the residue field $R/\frak
m$. Then, by using the above blowing-up, we reduce the study of the number of
cliques in $G_R(k)$ over the local ring $R$ to the computation of the number of
cliques of $G_{R/\frak{m}}(k)$ over the finite residue field $R/\frak m \simeq
\mathbb{F}_q$. In this way, using known numbers of cliques of generalized Paley
graphs ($k=2,3,4$ and $\ell=3,4$), we obtain several explicit results for the
number of cliques over finite commutative local rings with identity.
