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