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