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