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