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