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