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