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