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)(17,18,22,19)(20,23,27,25)(21,26,29,24)(28,31,32,30)(33,34)(35,41)(36,38)(37,40)(39,43)(42,48)(44,46)(45,47)(2,7)(5,8)(9,14)(13,15)(17,18,22,19)(20,25,27,23)(21,26,29,24)(28,30,32,31)(33,35,38,43)(34,39,36,41)(37,45,46,42)(40,48,44,47)(4,12)(9,14)(10,16)(13,15)(18,19)(20,27)(24,26)(28,32)(34,36)(37,46)(39,41)(42,45) involution — undirected(1,3)(2,8)(4,10)(5,7)(6,11)(9,15)(12,16)(13,14)(17,19,22,18)(20,25,27,23)(21,26,29,24)(28,31,32,30)(33,36,38,34)(35,41,43,39)(37,44,46,40)(42,48,45,47)(1,4,6,12)(2,9,7,14)(3,10,11,16)(5,13,8,15)(17,20,22,27)(18,23,19,25)(21,28,29,32)(24,30,26,31)(33,37)(34,40)(35,42)(36,44)(38,46)(39,47)(41,48)(43,45)(1,5,6,8)(2,3,7,11)(4,13,12,15)(9,10,14,16)(17,21,22,29)(18,24,19,26)(20,28,27,32)(23,30,25,31)(33,35)(34,39)(36,41)(37,42)(38,43)(40,47)(44,48)(45,46)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.