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