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