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