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