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