Create a new standard vSwitch on the vSphere Web Client, but, the virtual switch name cannot be named during creation process.
After create the vSwitch, how rename the vSwitch on the vSphere Web Client ?
Do I must to edit the esx.conf file ?
Can I rename vSphere vStandard switch on the vSphere Web Client？
As you mentioned, you can rename vSwitch using esx.conf file but take it in mind you need to reboot host for applying the change.
I think you can't change it using vSphere Web Client. Finally you can create vSwitch using this command:
esxcfg-vswitch -a "name"