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