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