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