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