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