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