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