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