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