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