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