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