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