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