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