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