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