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