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