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