The savtray icon will automaticall appear after restarting the system or after logoff/login.
Or you may manually launch savtray immediately after installation—run the following command as currently logged in user (do not use sudo):
"/opt/Symanec/symantec_antivirus/savtray &"
The trailing ampersand above will run savtray as a background process so it will not quit if you closed terminal window.