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