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