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