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