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