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