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