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