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