to soar, to fly up
翥 centers on upward flight: soaring or flying up into the air.
翥 combines 者 (which likely contributes the sound) with 羽 (wings), suggesting the idea of flying or soaring on wings.
A person (者) with wings (羽) attached, soaring upward into the sky.
For ショ, imagine a show where a winged performer soars high above the stage: show -> ショ.