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