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