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