According to SAP support, the only way to update SAPUI5 on HANA DB is to update to the DB to a new revision level. Even with the latest revision number (1.00.110.00) you would only get SAPUI5 1.28.15.
SAP doesn't seem to provide a static/standalone version of SAPUI5 either.
So there is no way to get SAPUI5 version 1.32 on HANA server as of now.