There is no 32 bit yEd installer anymore.
If you want to run yEd on a 32 bit operating system, download and install a Java runtime environment from Oracle (see Java SE Downloads), then download and extract the "Zipped yEd Jar file" from the yEd download site. Either double-click the Jar file or use the command
java -jar yed.jar
in the directory to where you extracted the zip archive to run yEd.