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