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