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)(19,24)(20,30)(21,26)(22,28)(23,27)(25,32)(29,31) involution — undirected(1,3)(2,5)(4,8)(6,7)(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,26)(21,30)(22,29)(23,25)(27,32)(28,31) involution — undirected(2,6)(3,8)(10,13)(14,16)(17,20,22,32,23,31,21,24)(18,25,26,30,27,19,28,29)(2,6)(5,7)(9,11,12,15)(10,14,13,16)(19,25)(20,31)(24,32)(29,30)(10,13)(14,16)(17,21,23,22)(18,26,27,28)(19,29,25,30)(20,24,31,32)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.