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