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