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