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