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