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