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)(22,26)(23,29)(24,32)(27,33)(28,30)(31,35)(2,4)(21,22,24,26,25,27,32,33)(23,30,29,36,31,28,35,34)(5,8,10,9)(6,12,13,17)(7,15,16,18)(11,19,14,20)(22,27)(26,33)(28,30)(34,36)(5,9,10,8)(6,12,13,17)(7,15,16,18)(11,20,14,19)(21,23,24,29,25,31,32,35)(22,28,26,34,27,30,33,36)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.