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)(17,18,22,19)(20,25,28,23)(21,24,30,26)(27,32,29,31)(2,3)(6,7)(11,15)(14,16)(18,19)(23,25)(24,26)(31,32) involution — undirected(1,2,5,3)(4,6,8,7)(9,10)(11,14)(12,13)(15,16)(18,19)(23,25)(24,26)(31,32)(1,3,5,2)(4,7,8,6)(9,11,12,15)(10,14,13,16)(17,19,22,18)(20,25,28,23)(21,24,30,26)(27,31,29,32)(1,4)(2,6)(3,7)(5,8)(9,10)(11,14)(12,13)(15,16)(17,20)(18,23)(19,25)(21,29)(22,28)(24,32)(26,31)(27,30) involution — undirected(17,21)(18,24)(19,26)(20,27)(22,30)(23,31)(25,32)(28,29) 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.