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