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