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