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