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