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