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