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