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