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