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