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