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