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