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