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