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