  We theoretically study spin-transfer torque (STT) in a graphene system with
spin-orbit coupling (SOC). We consider a graphene-based junction where the
spin-orbit coupled region is sandwiched between two ferromagnetic (F) segments.
The magnetization in each ferromagnetic segment can possess arbitrary
orientations. Our results show that the presence of SOC results in
anisotropically modified STT, magnetoresistance, and charge conductance as a
function of relative magnetization misalignment in the F regions. We have found
that within the Klein regime, where particles hit the interfaces
perpendicularly, the spin-polarized Dirac fermions transmit perfectly through
the boundaries of an F-F junction (i.e., with zero reflection), regardless of
the relative magnetization misalignment and exert zero STT. In the presence of
SOC, however, due to band structure modification, a nonzero STT reappears. Our
findings can be exploited for experimentally examining proximity-induced SOC
into a graphene system
