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