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