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