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)(11,15,16,13)(17,18)(19,24)(20,29)(21,26)(22,27)(23,25)(28,31)(30,32)(2,6)(3,8)(9,10,12,14)(11,13,16,15)(17,19,23,20)(18,24,25,29)(21,27,31,30)(22,28,32,26)(1,3)(2,4)(5,8)(6,7)(9,10)(11,13)(12,14)(15,16)(18,25)(22,32)(24,29)(26,28) involution — undirected(1,4)(2,3)(5,7)(6,8)(9,11)(10,13)(12,16)(14,15)(17,20,23,19)(18,24,25,29)(21,27,31,30)(22,26,32,28)(17,21,23,31)(18,26,25,28)(19,27,20,30)(22,29,32,24)(17,22)(18,27)(19,28)(20,26)(21,29)(23,32)(24,31)(25,30) 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.