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