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