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