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