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