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