One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,7,5,8,11,14)(3,6,10,13,9,12,15,16)(17,18,21,27,23,25,22,37)(19,28,30,46,31,45,38,43)(20,32,34,42,36,44,35,26)(24,33,40,47,39,48,41,29)(17,19,23,31)(18,24,25,39)(20,33,36,48)(21,30,22,38)(26,43,42,46)(27,40,37,41)(28,44,45,32)(29,34,47,35)(1,3)(2,6)(4,10)(5,9)(7,13)(8,12)(11,15)(14,16)(18,25)(24,39)(26,42)(27,37)(28,45)(32,44)(40,41)(43,46) involution — undirected(3,9)(6,12)(10,15)(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.