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