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