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