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