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