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