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