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