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