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