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