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