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