Depends.

For gaming (even light gaming) I'd pick the 5600 MT/s option. This is because the iGPU shares memory with the CPU, and iGPUs are very bandwidth hungry.

However for average day-to-day use memory bandwidth is less important as long as it's good enough (and 4800 MT/s is plenty), so for that I'd pick having more memory.

32GB 4800 MT/s costing about the same as 16 GB 5600 MT/s is odd. Quickly looking at prices here in the US the 32 GB is around 60% more expensive.