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