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