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