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