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