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