已知等比数列\(\{ a_{n}\}\)满足\(a_{1}a_{6}{=}32a_{2}a_{10}{,}\{ a_{n}\}\)的前\(3\)项和\(S_{3}{=}\dfrac{21}{4}\)．
\((1)\)求数列\(\{ a_{n}\}\)的通项公式；
\((2)\)记数列\(b_{n}{=}\log_{2}\dfrac{a_{n}}{3}\)，求数列\(\{ b_{n}\}\)的前\(n\)项和\(T_{n}\)．