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