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