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