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