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