Difference divisor graph of the finite group

Let (Zn, +) be a finite group of integers modulo n and Body Wash Dn a non-empty subset of Zn containing proper devisors of n.In this paper, we have introduced the difference divisor graph Diff (Zn, Dn) associated with Zn whose vertices coincide with Zn such that two distinct vertices are adjacent if and only if either a-b belongs to Dn or b-a belongs to Dn.We have investigated its algebraic 5 Piece Outdoor Dining Set and graph theoretic properties.Further, we have proved that the difference divisor graph Diff (Zn, Dn) is not a Cayley graph.