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