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