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