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