This graph is the complement of the $\mathrm{NO}_5^+(4)$ graph.
| Number of vertices: | $136$ |
| Diameter: | $2$ |
| Intersection array: | $\{60,35;1,28\}$ |
| Spectrum: | $60^1 4^{85} (-8)^{50}$ |
| Automorphism group: | $\mathrm{O}(5,4):2 \cong \mathrm{PSp}(4,4).2$ |
| Distance-transitive: | Yes |
| Primitive |