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