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