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