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