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