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