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