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