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