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