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