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)(17,18,23,26,22,27,21,32)(19,24,29,20,25,30,28,31)(1,3)(2,5)(4,8)(6,7)(17,19,23,29,22,25,21,28)(18,24,26,20,27,30,32,31)(3,8)(5,7)(10,13)(14,16)(17,20)(18,19)(21,24)(22,31)(23,30)(25,27)(26,29)(28,32) involution — undirected(2,6)(5,7)(17,20)(18,25)(19,27)(21,24)(22,31)(23,30)(26,28)(29,32) involution — undirected(9,11,12,15)(10,14,13,16)(17,21,22,23)(18,26,27,32)(19,28,25,29)(20,30,31,24)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.