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