Solution
= Solution
By transitivity and the <orbit-stabilizer theorem>,
$$
|G|=7|G_x|=7\cdot24=168=2^3\cdot3\cdot7.
$$
Inside $G_x\cong S_4$, there are three Sylow $2$-subgroups, each of order eight, and four Sylow $3$-subgroups, each of order three. These are also Sylow <subgroups> of $G$.