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