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