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