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)(11,13,15,16)(17,18,22,27)(19,28,25,24)(20,31,32,30)(21,26,23,29)(1,3,5,4)(2,6,7,8)(9,11)(10,13)(12,15)(14,16)(17,19)(18,24)(20,26)(21,31)(22,25)(23,30)(27,28)(29,32)(11,15)(13,16)(17,20,23,28,22,32,21,24)(18,25,26,31,27,19,29,30)(1,4,5,3)(2,6,7,8)(9,11)(10,13)(12,15)(14,16)(17,21,22,23)(18,26,27,29)(19,30,25,31)(20,24,32,28)(11,15)(13,16)(19,25)(20,32)(24,28)(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.