We introduce the notion of m-bonacci-sum graphs denoted by Gm,n for positive integers m,n. The vertices of Gm,n are 1,2,…,n and any two vertices are adjacent if and only if their sum is an m-bonacci number. We show that Gm,n is bipartite and for n≥2m−2, Gm,n has exactly (m−1) components. We also find the values of n such that Gm,n contains cycles as subgraphs. We use this graph to partition the set 1,2,…,n into m−1 subsets such that each subset is ordered in such a way that sum of any 2 consecutive terms is an m-bonacci number. © 2021 Elsevier B.V.