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