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