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