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