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