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