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