I cannot find MvvmCross-Binaries\XS-iOS-Mac\bin[Debug|Release] binaries though I can see the recommendation about using it on Mac from https://github.com/MvvmCross/MvvmCross-Tutorials.
Can I not use MvvmCross binaries on Mac anymore?
That image is out of date - it dates back to the old dark days before PCLs really worked on iOS.
You can now use nuget or the VisualStudio-built assemblies. (However, right now we are also in the dark transition stage between Classic and Unified Xamarin.iOS APIs)