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