Well.. Little busy these days..
then in ie put 192.168.8 0 :port 8080
here you have to pute 3128 as port b'coz u have have specified it as port.. the "http_port" directive. if you change "http_port 8080" then you can use as you have done above.
Lastly now what you have to do is assign proper permission and ownership to your cache directory.
Btw.. did you got any error when your initialized your cache using -z ? if no then still follow few steps below.
Now as you have made group squid and user squid so your permission should look like ..
type following commands one by one..
chown root:root /usr/local/squid/
chmod 755 /usr/local/squid/
chown root:root . chown root:root *
chmod 755 . *
chmod 2775 .
chown root:squid . *
chown squid:squid /usr/local/squid/logs
chmod 770 /usr/local/squid/logs
chown squid:squid /cache
chmod 770 /cache
Now run -z to initialize cache...
btw.. this time I have used little copy'n'paste but hope will be helpful to u!