Touma made his senior debut for Syrianska FC in the 1994 Division 2. He joined Djurgårdens IF, where he won the PSM för klubblag with the under-16 squad. He debuted in the senior team in the 1997 season.
He later played for AIK, Halmstads BK and F.C. Twente. He won "the Big Silver" (Stora Silvret in Swedish, second place in the Swedish top league, Allsvenskan) with Halmstads BK 2004 and left them for FC Twente. On 4 November 2008 was suspended and called up for the second team from Borussia Mönchengladbach between December 2008, he also release the club in July 2009 to sign with Iraklis.
Touma was on a trial with the Norwegian football club Rosenborg BK and on 22 March 2010 Touma returned from Iraklis Thessaloniki F.C. to his mother club Djurgårdens IF of the Allsvenskan. He played from 1997–1999 in Stockholm and scored 10 goals in 48 matches.