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