Here is the code I used:
UnitCellCount=1;
Resolution=100;
[x, y ,z] = ndgrid([0:(1/Resolution):UnitCellCount]...
,[0:(1/Resolution):UnitCellCount],...
[0:(1/Resolution):UnitCellCount]);
t=-(cos(2*pi*x).*sin(2*pi*y)+cos(2*pi*y).*sin(2*pi*z)+cos(2*pi*z).*sin(2*pi*x));
t0=1.35;
fv3=isosurface(x,y,z,t,t0,'noshare');
patch('Vertices',fv3.vertices,'Faces',fv3.faces,'FaceColor','r','EdgeColor','none','FaceAlpha',1);
daspect([1,1,1]);
lighting gouraud
view(120,-50);
camlight left