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