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