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