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