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