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