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