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