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