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