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