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