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