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