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