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