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