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