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