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