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