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