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