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