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