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