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