Turing machine state transition diagram vs finite state machine state transition diagram
Summary : you may still be able to tell them apart , but not necessarily
First refere to the formal definition to a Turing machine from Wikipedia
Now consider the transition function δ :

First , δ does not allow transitions from accepting states , so in a state diagram of a TM you expect some state to have no transitions from it , unlike a DFA where every state must have transitions out of it , other definitions of TMs allow transitions from final states , but have accept/reject states taking effect immediately , and so you don't expect these states to have transitions

δ is a partial function , thus you don't need to define a transition for each state and each symbol , unlike DFAs which require a transition from each on each symbol (refer to Wikipedia under complete and incomplete) , so in a DFA you have all states having equal number of transitions/arrows from them but not necessarily in a Turing machine


Arguments :

1 would be nullified if TM and DFA have no final states to begin with
2 can also be nullified should we choose to provide transition from all states on all symbols for a TM , or go for the less common alternative definition for the DFA in Wikipedia and then not all states need to have equal number of transitions