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