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