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