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