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