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