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