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