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