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