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