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