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