It's a popular piece so there are some good bits out there. SongTrellis has midi + charts (
Bemsha Swing); the AAJ site has several threads on it, this one looks useful (
Bemsha Swing and Chord Subs - Jazz Bulletin Board) and here's a link to a guy playing it, well let's just say,
relaxed...but it's very easy to see the voicings he's playing. Hope this helps.
YouTube - Solo Jazz Guitar Bemsha Swing Thelonius Monk