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)(17,18,20,25,21,24,30,23)(19,26,29,32,28,22,27,31)(1,3)(2,5)(4,8)(6,7)(10,13)(11,15)(17,19,21,28)(18,22,24,26)(20,29,30,27)(23,32,25,31)(9,10)(11,14)(12,13)(15,16)(17,18)(19,26)(20,23)(21,24)(22,28)(25,30)(27,32)(29,31) involution — undirected(3,8)(5,7)(10,13)(14,16)(17,19)(18,22)(20,29)(21,28)(23,32)(24,26)(25,31)(27,30) involution — undirected(9,11,12,15)(10,14,13,16)(17,20,21,30)(18,23,24,25)(19,27,28,29)(22,31,26,32)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.