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