trx2html is the thing you should be using.
download the trx2html file here - http://trx2html.codeplex.com/
unzip and put the files in C:\Program Files (x86)\trx2html
You can execute it from the command line with below command:
"C:\Program Files (x86)\trx2html\0.6\trx2html.exe" TestResult.trx
You can add same as a post build step in Jenkins. In post build step, execute it as a batch command.
Also, make sure that above software is added at the server your Jenkins server is running.
Hope that helps!