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