The employee's W-2 shows the gross wages.
Gusto reports net wages after deduction of tax withheld and employee's SS and Medicare taxes.
Payroll taxes per Gusto include tax withheld and both employee's and employer's SS and Medicare taxes.
On your form 1120S for your S-Corp, you should report $36,858 as wages and $3,106 as Payroll taxes ($28,845 + $11,119 - $36,858).