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