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