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