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