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