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