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