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