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