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