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