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)(17,20)(18,19)(23,27)(24,31)(30,35)(32,36)(6,10)(8,11)(14,19)(15,17)(21,22,26,29)(23,24,27,31)(25,33,34,28)(30,36,35,32)(5,7)(6,8)(9,12)(10,11)(13,15,18,17)(14,20,19,16)(21,23)(22,24)(25,30)(26,27)(28,32)(29,31)(33,36)(34,35)(1,2)(3,4)(5,7)(6,11)(8,10)(9,12)(13,16)(14,15)(17,19)(18,20)(21,24)(22,27)(23,29)(25,32)(26,31)(28,35)(30,33)(34,36) involution — undirected(5,8,9,11)(6,12,10,7)(13,17,18,15)(14,20,19,16)(21,25,26,34)(22,28,29,33)(23,30,27,35)(24,32,31,36)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.