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