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