Mac address for address every virtual server?

I want know Which is mac address for address ip to every virtual server?

it is vlan mac address unless you configure mac masquerading.

sol13502: Configuring MAC masquerade (11.x)

How I could see this from GUI and CLI?

yes, it is shown in gui and cli.

root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) show net vlan external |grep Mac\ Address
Mac Address (True)  00:50:56:b3:0b:1a