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