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