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