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)(21,22,26,34,25,29,24,28)(23,30,31,27,33,35,32,36)(1,2)(3,4)(5,7,11,8)(6,12,15,20)(9,18,10,17)(13,19,16,14)(2,4)(5,8,11,7)(6,13,15,16)(9,18,10,17)(12,19,20,14)(21,23)(22,27)(24,31)(25,33)(26,32)(28,35)(29,36)(30,34)(5,9)(7,17)(8,18)(10,11)(12,20)(14,19)(21,24,25,26)(22,28,29,34)(23,31,33,32)(27,35,36,30)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.