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