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