  We study the chaotic dynamics in a classical many-body system of interacting
spins on the kagome lattice. We characterise many-body chaos via the butterfly
effect as captured by an appropriate out-of-time-ordered correlator. Due to the
emergence of a spin liquid phase, the chaotic dynamics extends all the way to
zero temperature. We thus determine the full temperature dependence of two
complementary aspects of the butterfly effect: the Lyapunov exponent, $\mu$,
and the butterfly speed, $v_b$, and study their interrelations with usual
measures of spin dynamics such as the spin-diffusion constant, $D$ and
spin-autocorrelation time, $\tau$. We find that they all exhibit power law
behaviour at low temperature, consistent with scaling of the form $D\sim
v_b^2/\mu$ and $\tau^{-1}\sim T$. The vanishing of $\mu\sim T^{0.48}$ is
parametrically slower than that of the corresponding quantum bound, $\mu\sim
T$, raising interesting questions regarding the semi-classical limit of such
spin systems.
