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