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