One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,10,12)(7,8,11,9)(15,19)(18,20)(21,22)(23,24)(25,28)(26,27)(29,32)(30,31)(33,34)(35,36)(2,4)(5,7,10,11)(6,8,12,9)(13,14,17,16)(15,18,19,20)(22,27)(23,29)(25,33)(31,36)(1,2,3,4)(5,8,10,9)(6,7,12,11)(13,15)(14,18)(16,20)(17,19)(21,23,26,29)(22,24,27,32)(25,30,33,35)(28,31,34,36)(5,9,10,8)(6,11,12,7)(13,16,17,14)(15,20,19,18)(21,24)(22,23)(25,31)(26,32)(27,29)(28,30)(33,36)(34,35)(5,6)(7,8)(9,11)(10,12)(13,15)(14,18)(16,20)(17,19)(21,25,26,33)(22,28,27,34)(23,30,29,35)(24,31,32,36)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.