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