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