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