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