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