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