One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,3,4)(7,11)(10,12)(14,17)(15,19)(21,22)(23,24)(25,28)(26,29)(27,30)(31,32)(33,34)(35,36)(6,9)(10,12)(15,19)(18,20)(21,23,27,25)(22,28,30,24)(26,31,35,33)(29,34,36,32)(5,6,8,9)(7,10,11,12)(13,14)(15,18)(16,17)(19,20)(21,24,27,28)(22,23,30,25)(26,34,35,32)(29,33,36,31)(1,2)(3,4)(13,15)(14,18)(16,19)(17,20)(21,25,27,23)(22,28,30,24)(26,33,35,31)(29,34,36,32)(5,7)(6,10)(8,11)(9,12)(21,26,27,35)(22,29,30,36)(23,31,25,33)(24,32,28,34)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.