Classification of tetravalent $2$-transitive non-normal Cayley graphs of finite simple groups

Xin Gui Fang, Jie Wang, Sanming Zhou

A graph $\Gamma$ is called $(G,s)$-arc-transitive if $G\le \mathrm{Aut}(\Gamma )$ is transitive on the set of vertices of $\Gamma$ and the set of $s$-arcs of $\Gamma$, where for an integer $s\ge 1$…