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