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