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