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