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