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