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)(13,14,16,18)(15,19,20,17)(21,22)(23,29)(24,26)(25,28)(27,30)(31,36)(32,34)(33,35)(5,6,10,9)(7,11,8,12)(15,20)(17,19)(22,24)(23,30)(28,32)(31,33)(5,7,10,8)(6,11,9,12)(13,14)(15,17)(16,18)(19,20)(21,23)(22,27)(24,29)(25,33)(26,30)(28,36)(31,34)(32,35)(1,2,3,4)(5,8,10,7)(6,11,9,12)(13,15,16,20)(14,17,18,19)(21,24,26,22)(23,29,30,27)(25,32,34,28)(31,36,33,35)(5,9,10,6)(7,11,8,12)(21,25,26,34)(22,28,24,32)(23,31,30,33)(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.