I practicing the original version i also tried the liszt transcription. The triplets over the normal eigth notes are in my opinion difficult to play it always throughs me off.
Yes, it can be very tricky to get used to triplets over 8th notes. There are a few sayings that people use such as 'nice cup of tea' where you start with the first two notes together, then spread the others over the remaining words (so, second triplet with 'cup', second 8th note with 'of' and the third triplet with 'tea'. Another thing that can be very helpful is to practice other pieces where the melody alternates between standard 8th notes and triplet 8th notes. There are lots of such patterns in Scarlatti and Mozart for example. Also, try looking at pieces that use a similar pattern. There's a nice little piece called Romance Poudrée by Jules Burgmein for example where there are lots of examples of it.