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