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