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