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