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